<!-- 保存按钮固定在底部 -->
<div class="position-fixed bottom-0 start-0 w-100 bg-body p-3 shadow-lg">
    <div class="container-fluid">
        <div class="row">
            <div class="col-12">
                <button type="button"
                    class="btn btn-primary btn-lg w-100"
                    id="saveButton">
                    <i class="bi bi-save me-2"></i>保存所有设置
                </button>
            </div>
        </div>
    </div>
</div>